Wrench



' incnii.

Patented Jan. 22, 1924. .f

y:STATES I 1,481,25ai,

GEOGE J; BQHNAND :man w. WERNER, or MLWAUxEE, wisconsin."

WRENCH Appunti. med november 25,1921. semi nmsizso'i.

i n all wmfn'i it may concern: y Be itkno'wn that We, Gannon J. BoHN and Fano W. lVnRNnn. both citizens of the Unitedv States, and residents of Milwaukee. in `the county of Milwaukee and State Vof lVisconsin have invented certain new and `useful Imin'ovenients in Wrenches; and we doliereb'v-declare tliatthe following 1s a fullrycleai, and exact description thereof.`

, furinrention relates :to a wrench. It has for its object thc provision of a device that will be adjustable to tit a. nut of any size in an especially rapid manner and can be i'emoved vtherefrom n ith the greatest' readliiess. 'It contemplates the utilization of a miniinimi number-of parte. the ease of manu-n facture of these pai-ts, and especial strength4 and siniplicit \l of construction. ltfacilitates niccty iild'jiifstnfient'ivith respect to the nut or siniiliiiftilijt. Thc-adjustment with respect to the nut is accomplished by the manual advancement of a sliding collar advancing a wedge with respect to a jaw:

'Ihe detacliiug of the wrench is accomplished b v the withdrawal of the collar, and the retraction ot the jaw by means of a. spiral spring.

Other objects and advantages will appear as thc description proceeds. `Reference is li-.u'll tol thc accompanying drawings, in which liic'ui'c l is a side elevation with parts in section. and

Figui-o Q is a cross sectionv on the line Q-Q ol: Figure 1.

llandlilll is integral with arm `11 and jars 1Q. i'in l1 if chanihercd at1l. ledge 14 is chainlmii-d ai i5. A spiral spring' 16 has iis mida allixcd to arm 1l by pin li'and to wedge 14 bi: pin 1R. l'linicnsions of chambers 13 andl :3 zii-c such as to facilitate the ready advancement` and` retraction of the wedge. A collar' 19 slidably engages arm 11 and wedge 1-1A and maintains tlicm Aiii engageilichandle'is limited by lusy 20 wvhich'ew gages with shoulder portion 21 of the collar.

ln the operation of the device!` collar 19 ismored away from the handle manually and as it does so. then'edge 14 moves downwardly on the inclined surface of arm 11, thus decreasing the distance between the wedge 14 and jan' 12. Then the nut is engaged. the hand of the operator may be removed from all portions of the device. The handle may be grasped to manipulate the The movement of collar 19 towards wrench. f The pressure exerted byfthenut on jaw 14; does not operate to move the jaw i because of thefwedging action and fries?" tional engagement, `f2fi``60 When it is desired to disengage tl'ieiavedgef. from the nut, the collar 19 is maiiiallyrei"A tracted. In this retraction Sprin'g ltnlioves wedge 14 rearwardly so that at all times collar 19, arm l1; and wedge '14 are in'con-w tact. The extreme rearward `movement ceases when shoulder 21 engages lug 20."

It is apparent that the device .Eaciliii'atesf=l speedy adjustment to nuts ofdierentsi'zes as the distance between the wedge 1.4"and jaw 12 is regulated by themer'e" travelof` collar 19.

'lVe claim as our invention 11i 'f l. In a Wrench,v the `combinfiitinrolia?5 handle, an arm Y' rig-id `therewith 'ha-ving; twof75 faces'. inclined towards 'eachothryibne of said faces having a recess therein, a wedgeshaped member slidable on one of said faces and having a chamber therein, a collar en veloping said arm and said wedge, and a. springalixed to said Wedge-shaped member and said arm for retracting said Wedge shaped member with respect to said arm, said spring bein;` completely housed in said chamber and said recess.

2. In a wrench, the combination of a handle, an arm rigid therewith having two faces inclined towards cach other, one of said fares having an elongated chamber therein, a wedge shaped member having an W Velongffited chamber in one of its faces slidable on said handle, a spring; allixed to said wedge shaped member and said arm and 'housed completely in said chambers, and a collar enveloping said wedge shaped membei' and said arm for adjusting said Wedge shaped member on said arm.

3. A wrench comprising; a shank having a rigid jaw at the end` an adjustable jaw siidably engaging with the under part of 10 the shank, a sleeve surrounding the shank and jaw and slidable upon the shank, said jaw and shank having registering grooves extending: longitudinally in the opposed faces thereof and a retraetile spring, the

"ends ot' which are secured in the respective grooves. l

4. A. wrench comprising a shank with a fixed jan'. a wedge-shaped movable jaw, a movable sleeve embracing the jaw and the 11 shank, channels in the jaw and the shank, and aspring arranged in the said channels .dond ladaipted to E111] the movable jaw into -thesaid sleeve, t

e springr heing r totally enclosed in the said channels visible.

6. A wrench embodying in its construction a shank having a jaw onlone end, a wedge-shaped jaw slidnble upon the under side of the shank. an angular sleeve sur roundin the shank and .jnngsaid slmnkand jaw an sleeve hevinglv eorrespondingly inclhed walls slidably engaging with one van; other, ,said shank and jaw having registering recesses in the opposed faces thereof and a spring. the ends of which are secured in respective recesses.

6. A wrench comprisingr a handle. a slide section, and a fixed jaw onthe outer end thereof, a bearing surface on the inner Side so as to be inof the slide section. a wedge-shaped jaw slidably mounted thereon. n. yoke enclosing the slide Section and the wedge-shaped jaw, a groove formed in the hearing surface` n communicating groove formed in the adjaoeilt foce of the wedge shaped jaw. and an extensible spring enclosed by said grooves and having its opposite ends secure'd to the slidesection and jaw respectively.

l 7. A wrench comprising a handle, a slide section and a fixed jaw on the outer end thereof. n hearing` surface ou one side of the slide ser-tiem nn`angularly disposed friction mfnee formed ou the opposite Fide thereof. n wedge-shaped jaw slidalily mounted on the bearing surfnce. n yoke enclosing' the lslide sect-ion and the wedgeshuped jan. u groove formed in the bearing Surface of the filide section. a groove formed in` the adjaf'ent fnee, of the wedge-Shaped jou'. :i helical sin-iu;v disposed within said grooves. and means Securing the opposite. ends of said springr to the. inw and the slide section respectively.

8. ln n wrench. n fixed jaw and tapered neck therefrom lending to a handle, aV tapered sleeve mounted on Said neck. a` wedge shaped movable 4inw inserted in said sleeve, the fares of said neck und said Sleeve being' recessed, :md :i spring in' seid recesses and holdin;r said movable i:mtto said neck.

In testimony that we claim the foregoing We have hereunto set our hands at Milwau kee. in the county of Milwaukee and State of lViseonsin. i

GEORGE J. BoHN. FRED W. WERNER. 

